<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>参数列表</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <el-alert title="只允许为第三级分类设置相关参数!" type="warning" show-icon :closeable="false"></el-alert>

      <el-row class="cat_opt">
        <el-col>
          <span>选择商品分类:</span>
          <el-cascader
            v-model="selectedCateKeys"
            :options="catelist"
            :props="cateProps"
            @change="handleChange"
          ></el-cascader>
        </el-col>
      </el-row>

      <el-tabs v-model="activeName" @tab-click="handleTabClick">
        <el-tab-pane label="动态参数" name="many">
          <el-button
            type="primary"
            size="mini"
            :disabled="isBtnDisabled"
            @click="addDialogVisible=true"
          >添加参数</el-button>

          <el-table :data="manyTableData" border stripped>
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="handleClose(i, scope.row)">{{item}}</el-tag>

                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                ></el-input>
                <el-button
                  v-else
                  class="button-new-tag"
                  size="small"
                  @click="showInput(scope.row)"
                >+ New Tag</el-button>
              </template>
            </el-table-column>
            <el-table-column type="index"></el-table-column>
            <el-table-column prop="attr_name" label="参数名称"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button
                  type="primary"
                  icon="el-icon-edit"
                  size="mini"
                  @click="showEditDialog(scope.row.attr_id)"
                >编辑</el-button>
                <el-button
                  type="danger"
                  icon="el-icon-delete"
                  size="mini"
                  @click="removeParams(scope.row.attr_id)"
                >删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
        <el-tab-pane label="静态属性" name="only">
          <el-button
            type="primary"
            size="mini"
            :disabled="isBtnDisabled"
            @click="addDialogVisible=true"
          >添加属性</el-button>

          <el-table :data="onlyTableData" border stripped>
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="handleClose(i, scope.row)">{{item}}</el-tag>

                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                ></el-input>
                <el-button
                  v-else
                  class="button-new-tag"
                  size="small"
                  @click="showInput(scope.row)"
                >+ New Tag</el-button>
              </template>
            </el-table-column>
            </el-table-column>
            <el-table-column type="index"></el-table-column>
            <el-table-column prop="attr_name" label="属性名称"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button
                  type="primary"
                  icon="el-icon-edit"
                  size="mini"
                  @click="showEditDialog(scope.row.attr_id)"
                >编辑</el-button>
                <el-button
                  type="danger"
                  icon="el-icon-delete"
                  size="mini"
                  @click="removeParams(scope.row.attr_id)"
                >删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>
    </el-card>

    <el-dialog
      :title="'添加'+titleText"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <el-form ref="addFormRef" :model="addForm" :rules="addFormRules" label-width="80px">
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="addForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addParams">确 定</el-button>
      </span>
    </el-dialog>

    <el-dialog
      :title="'修改'+titleText"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <el-form ref="editFormRef" :model="editForm" :rules="editFormRules" label-width="80px">
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="editForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editParams">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
	data() {
		return {
			catelist: [],
			cateProps: {
				expandTrigger: "hover",
				value: "cat_id",
				label: "cat_name"
			},
			selectedCateKeys: [],
			activeName: "many",
			manyTableData: [],
			onlyTableData: [],
			addDialogVisible: false,
			addForm: {
				attr_name: ""
			},
			addFormRules: {
				attr_name: [
					{ required: true, message: "请输入参数名称", trigger: "blur" }
				]
			},
			editDialogVisible: false,
			editForm: {
				attr_name: ""
			},
			editFormRules: {
				attr_name: [
					{ required: true, message: "请输入参数名称", trigger: "blur" }
				]
			}
			// inputVisible:false,
			// inputValue:''
		};
	},
	created() {
		this.getCateList();
	},
	methods: {
		async getCateList() {
			const { data: res } = await this.$http.get("categories");
			if (res.meta.status !== 200) {
				return this.$message.error("获取商品分类失败");
			}
			this.catelist = res.data;
			// console.log(this.catelist);
		},
		handleChange() {
			// if (this.selectedCateKeys.length !== 3) {
			// 	this.selectedCateKeys = [];
			// 	return;
			// }
			// console.log(this.selectedCateKeys);
			this.getParamsData();
		},
		handleTabClick() {
			// console.log(this.activeName);
			this.getParamsData();
		},
		async getParamsData() {
			if(this.selectedCateKeys.length!==3){
				this.selectedCateKeys=[];
				this.manyTableData=[];
				this.onlyTableData=[];
				return ;
			}
			const { data: res } = await this.$http.get(
				`categories/${this.cateId}/attributes`,
				{
					params: { sel: this.activeName }
				}
			);
			if (res.meta.status !== 200) {
				return this.$message.error("获取参数列表失败");
			}
			res.data.forEach(item => {
				item.attr_vals = item.attr_vals ? item.attr_vals.split(" ") : [];
				item.inputVisible = false;
				item.inputValue = "";
			});
			// console.log(res.data);
			if (this.activeName === "many") {
				this.manyTableData = res.data;
			} else {
				this.onlyTableData = res.data;
			}
		},
		addDialogClosed() {
			this.$refs.addFormRef.resetFields();
		},
		async addParams() {
			this.$refs.addFormRef.validate(async valid => {
				if (!valid) return;
				const { data: res } = await this.$http.post(
					`categories/${this.cateId}/			attributes`,
					{
						attr_name: this.addForm.attr_name,
						attr_sel: this.activeName
					}
				);
				if (res.meta.status !== 201) {
					return this.$message.error("添加参数失败");
				}
				this.$message.success("添加参数成功");
				this.getParamsData();
			});
			this.addDialogVisible = false;
		},
		async showEditDialog(attr_id) {
			const {
				data: res
			} = await this.$http.get(
				`categories/${this.cateId}/attributes/${attr_id}`,
				{ params: { attr_sel: this.activeName } }
			);
			if (res.meta.status !== 200) {
				return this.$message.error("获取参数信息失败");
			}
			this.editForm = res.data;
			this.editDialogVisible = true;
		},
		editDialogClosed() {
			this.$refs.editFormRef.resetFields();
		},
		async editParams() {
			this.$refs.editFormRef.validate(async valid => {
				if (!valid) return;
				const {
					data: res
				} = await this.$http.put(
					`categories/${this.cateId}/attributes/${this.editForm.attr_id}`,
					{ attr_name: this.editForm.attr_name, attr_sel: this.activeName }
				);
				if (res.meta.status !== 200) {
					return this.$message.error("修改参数失败");
				}
				this.$message.success("修改参数成功");
				this.getParamsData();
				this.editDialogVisible = false;
			});
		},
		async removeParams(attr_id) {
			const confirmResult = await this.$confirm(
				"此操作将永久删除该参数, 是否继续?",
				"提示",
				{
					confirmButtonText: "确定",
					cancelButtonText: "取消",
					type: "warning"
				}
			).catch(err => err);
			if (confirmResult !== "confirm") {
				return this.$message.info("已取消删除");
			}
			const { data: res } = await this.$http.delete(
				`categories/${this.cateId}/attributes/${attr_id}`
			);
			if (res.meta.status !== 200) {
				return this.$message.error("删除参数失败");
			}
			this.$message.success("删除参数成功");
			this.getParamsData();
		},
		async handleInputConfirm(row) {
			// console.log("ok");
			if(row.inputValue.trim().length===0){
				row.inputValue='';
				row.inputVisible=false;
				return
			}
			row.attr_vals.push(row.inputValue.trim());
			row.inputValue='';
			row.inputVisible=false;
			// row.inputVisible=false;
			this.saveAttrVals(row);
		},
		async saveAttrVals(row){
			const {data:res}=await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,{
				attr_name:row.attr_name,
				attr_sel:row.attr_sel,
				attr_vals:row.attr_vals.join(' ')
			});
			if(res.meta.status!==200){
				return this.$message.error('修改参数项失败');
			}
			this.$message.success('修改参数项成功');
		},
		showInput(row) {
			row.inputVisible = true;
			this.$nextTick(_ => {
				this.$refs.saveTagInput.$refs.input.focus();
			});
		},
		handleClose(i,row){
			row.attr_vals.splice(i,1);
			this.saveAttrVals(row);
		}
	},
	computed: {
		isBtnDisabled() {
			if (this.selectedCateKeys.length !== 3) {
				return true;
			} else {
				return false;
			}
		},
		cateId() {
			if (this.selectedCateKeys.length === 3) {
				return this.selectedCateKeys[2];
			} else {
				return null;
			}
		},
		titleText() {
			return this.activeName == "many" ? "动态属性" : "静态属性";
		}
	}
};
</script>

<style lang="less" scoped>
.cat_opt {
	margin: 15px 0;
}

.el-tag {
	margin: 10px;
}

.input-new-tag {
	width: 120px;
}
</style>